Virgin Mobile still offers the no-contract Apple iPhone 4S 16GB Prepaid Smartphone for Virgin Mobile in Black (pictured), model no. MD865LL/A, for $382.49 with free shipping. That's tied with our mention from last week and the lowest total price we've seen for this model. (It's a current price low by $18.) Virgin Mobile's prepaid plans start at $35 per month. The basic plan includes unlimited texting and data and 300 voice minutes, while upgraded plans feature more minutes.

Of note, Virgin Mobile also offers a no-contract Apple iPhone 4 8GB Prepaid Smartphone for Virgin Mobile in Black, model no. MD873LL/A, for $297.49 with free shipping. That's tied with our mention from last week and another all-time price low, this time by $3.